The glue with good performance also has a large change in melt viscosity with temperature. Specifically: when the use temperature rises above 150 degrees, the melt viscosity of the glue can be quickly reduced, so that the coating can maintain proper permeability; and when the temperature of the glue is lowered, the viscosity of the glue can quickly increase. , and quickly solidifies, thus ensuring the effect of rapid limb binding. Hot melt adhesives can maintain good permeability only if they have a suitable melt viscosity, which is very important for glue binding. But too low melt viscosity will cause insufficient amount of glue on the back of the book. The melting degree of hot melt adhesive is more suitable in the range of 4000-5000 centipoise. Good adhesion and penetration performance, that is, when the equipment is running at high speed, the glue must be able to quickly infiltrate the spine of the book, and have excellent cohesion, which can ensure "no wire drawing", and will not crack or fall apart after cooling. In order to achieve this goal, changing the composition of the glue is one aspect. The key is to improve the cohesion and toughness of the base resin, and to introduce strong adhesive force, hard quality, low melt viscosity into the composition, and when the temperature changes up and down, Resins that dissolve or set rapidly. Adhesives with good performance should also have good tensile strength. The phenomenon of loose pages, falling pages, and breaking during the use of adhesive books is directly related to the tensile strength of hot melt adhesives. The tensile strength is usually 20-30kg/cm2. Hot melt adhesives must have good elongation. The elongation at break is high, and the toughness of the hot melt adhesive is good; only with good toughness can the book not be easily broken. The elongation requirement is greater than 300%
Adhesive Binding,Hot Glue For Book Binding,Glue For Paper Binding,Book Binding Glue Spine GUANGZHOU INTERNET WOOD GLUE MANUFACTURER CO. LTD. , https://www.iwghotmelt.com
China's lighting industry is developing towards customization
Today, with the rapid development of the lighting industry, the development of technology is changing with each passing day, and various new products are emerging one after another. As LEDs are widely used in lighting, medicine, biology and other fields, people's lives have become more intelligent, convenient and comfortable. So, what is the trend of future lighting? The lighting industry is developing towards customization. In the era when customers are God's consumption, personalized consumption is more popular with consumers. Only by focusing on customers and satisfying the individual needs of different consumers, lighting companies can stand out from the red sea of ​​lighting industry. Future lighting must be based on LED, OLED and other new light sources as the main body of lighting, with intelligent interconnected lighting as the main corner, the intelligent, interconnected lighting system of sound, light and electricity will bring indoor and outdoor lighting environment of urban streets, communities, buildings and structures. The lighting carrier gives a comfortable light and color. Bold innovations combine the past, present and future of the building through the design of the lighting, creating a vivid and intertwined connection that forms the city's unique and individual urban style. At the same time, it is believed that intelligent control will achieve on-demand lighting, people-oriented, comfortable, safe, energy-saving and energy-saving. Human body induction, remote control, will make the lights open and close according to people's needs. At the same time, Secretary-General He outlined a beautiful blueprint for future lighting: a light painting art and an entertainer is about to be born. The light and shadow of the outdoor space will bring people into the magical world of singularity. People can talk and interact with the carriers of various light. The night walk is a pleasant and comfortable trip in the space of light and shadow. This blueprint for imagining future lighting should satisfy the future lighting of most people.